You mostly text
Most of your communication happens over text now, and major events prompt the contact. For example, you text each other “Happy birthday!” or “Happy New Year!” Then you go through an obligatory exchange of “How are things?” texts. You give surface-level updates, and then go silent until the next special occasion. You might be like some faux friends who stay in touch by sending one another funny memes, gifs, or articles from time to time. You riff about that, and get the impression that you’re still connected because you still share a sense of humor, but your friendship would be at a standstill without meme accounts.